Classification
H - Social Science
8,897
M - Music
4,289
T - Technology
3,857
Q - Science
3,464
S - Agriculture
3,364
D - World History
3,269
R - Medicine
2,549
P - Language and Literature
2,434
F - General American History
1,831
B - Philosophy, Psychology, Religion
1,719
A - General Works
1,333
L - Education
1,089
J - Political Science
1,035
Z - Library Science
896
K - Law
892
N - Fine Arts
805
G - Geography, Anthropology, Recreation
577
E - United States History
271
U - Military Science
222
C - Historical Sciences
165
V - Naval Science
72